Can I use my AT&T Iphone4 for US Cellular?

I bought the Iphone4 two years ago under AT&T. I stopped going with AT&T and switched to US Cellular so I stopped using my iphone and got a different phone (us cellular didn't have the iphone then.) well now us cellular DOES have iphones and I'm wondering if I will be able to take my iphone4 and activate it under us cellular now?

Will updating to iOS 7 delete text messages?

I know I'm late updating and all but I haven't had this phone long, since I replaced my old one, but I have an iPhone 4 and I'm planning on updating to the iOS 7.0.4 that is available. I have text messages that I've kept for a while because of information or I'm too sentimental for some to get rid of them (yeah, judge me) but I don't know if updating now will delete those (I'm hoping not). Also, will it delete my contacts? I hear it has for some people.

What colour Iphone 5s should I get out of Silver or Gold?

I have finally decided that I want the Iphone 5s but I don't know weather to get a while/silver one or a white/gold one which is the newest colour. I'm a girl and I saw most girls in the gym have silver ones, not in less it was the Iphone 5 which they don't do gold in. I'm from the UK btw also. I like the gold but not sure if it is for girls or boys, what colour do you think I should get?

IPhone apps where I can watch English dubbed (not subbed) anime for free, no ads?

I really want to watch Bleach on the go, as I'm always having to sit with my mamaw and my disabled uncle with nothing to do. I have Crunchyroll, but in order to watch older episodes I have to buy a membership. I have already downloaded 316 episodes to my laptop and they were separated in half, but the first eight seasons had text encoding & stuff in the opening credits and the last six seasons are English dubbed but have Japanese credits. (In the download I have.)

Best answer gets 10 points. (Now this is for an unbroken iPhone.)

I lost my iphone and its on silent? No tracker app?

I was in my basement last night watching a movie and I remember where I was sitting when I last used it. I turned it on silent before I lost it. Last night and this morning I searched for my phone all over that chair. And the chair next to it. I can't find it. I've called it, and it rings, so the battery is not dead. I HAD the Find My iPhone App before I deleted it to get iOS 7. ICloud is turned off (i think, maybe there's a way I can check to see if it is?) and I've been searching the internet for hours and I can't find anything. Can someone please tell me how I can find my phone?